baber/WOPTO huggingface dataset:
Patent GB-515823-A (GB)
Title: Improvements in or relating to the construction of trenches, culverts, conduits and the like
IPC: E04H9/12
Filed: 1938-11-22
Abstract: 515,823. Trenches. ZINN, W. V., and ANDREWS, W. C. Nov. 22, 1938, No. 33985. [Class 68 (ii)] Trenches, conduits and the like are formed by a series of spaced rigid frames, which define the cross-section of the trench, and interconnecting rigid slabs or plates which abut against the peripheral surfaces of the frames to form the walls and roofs. The frames 1, Figs. 1 and 2 may be of pre-cast reinforced concrete, while concrete slabs 11, 12 form the walls and roof and may be provided with reinforcing ribs 14, the ends of which bed against and support the frames. Rebates 13 in the edges of the slabs facilitate the making of tight longitudinal joints. The frames may have brackets 18 for seats and holes 6, 7 for electric conduits, water piping &c. Slabs of various shapes may be used including plain slabs 30, Fig. 6, fitting into rebates in the frames. The floor may consist of pre-cast concrete slabs or it may be cast in situ. Dowel pins 17 secure it to the frames. A concrete base 22, Fig. 4, may be arranged below the frames, drainage slots 23 being provided. In that case the floor proper may be formed of open jointed boards of concrete section 25 resting on the frames. The roof may be strengthened by longitudinal beams 28, Fig. 5, let into the top part of the frames. Cement, bitumen &c. may be let into the joints to make the trench water tight.
Patent GB-985366-A (GB)
Title: Method and apparatus for chemically treating glass ribbon or sheet for polishing
IPC: C03C15/02
Filed: 1963-08-28
Abstract: 985,366. Treating sheets of glass. PITTSBURGH PLATE GLASS CO. Aug. 28, 1963 [Sept. 20, 1962], No. 34008/63. Heading B2B. [Also in Division Dl] In apparatus for chemically treating both sides of a discrete sheet of glass 10 (e.g. in connection with the polishing of ground plate glass) in which a closed tank 12 of treating liquid is provided with entrance and exit apertures 18, 16 below the level of the liquid, the upper and lower edges of at least the entrance aperture are spaced from the upper and lower surfaces of the sheet and the surface of the liquid is subjected to a reduced pressure, e.g. by a pump P, so that the pressure in the liquid at the entrance aperture is equal to atmospheric and the liquid tends not to run from this aperture. In order that the pressure at the entrance aperture should be equal to atmospheric above and below the sheet, guides 49, 50 (see Fig. 6) over which the sheet slides have upward extensions 52, 54 which together with the ribbon, form a shallow pan into which liquid is continuously pumped by a pump P, the overflow passing to a lower level defined by weirs 56, 58. By arranging that the difference in height between the two levels is equal to the separation of the midpoints of the open slots above and below the sheet the desired equalizing of pressure is effected. In practice the adjustment is such that a slight flow runs from beneath the sheet to prevent air bubbles being trapped below the sheet; to catch this liquid a trough 46 is provided. To prevent fumes from the overflow liquid condensing on the sheet suction tubes 47 are arranged on either side of the ribbon. The upper and lower angles which define the parallel sided entrance aperture are preferably of an alloy. In the form shown the exit aperture 16 is formed as a mechanical squeegee 20 to remove reaction products. Specification 878,594 is referred to.
Patent GB-1476266-A (GB)
Title: Information recording transport
IPC: G11B15/28
Filed: 1975-08-15
Abstract: 1476266 Automatic control of tape loop  BELL & HOWELL CO 15 Aug 1975 [21 Aug 1974] 34028/75 Heading G3R [Also in Division G5] Two capstans 27, 29, each adjacent to a respective transducer assembly 31, 35, are spaced along the path of a tape 18 between two driven reels 20, 23, and three tape-tension equalizing means, e.g. vacuum columns 51, 55, 56, are located respectively in the gaps between the reels and the capstans and between the two capstans. As described, one transducer assembly 31 is used for recording and the other 35 for playback, and in either mode of operation the speed of the capstan adjacent to the operative transducer assembly is controlled by a servo circuit in which pulses from capstan or tape are compared with pulses from a reference oscillator (121), Fig. 5 (not shown), while the other capstan is controlled by a servo circuit including the photo-electric tape-sensor (109) in the central vacuum column 56.
Patent GB-1039018-A (GB)
Title: Non-magnetic mine suitable for rapid setting and sowing
Inventor: ROMANO GUIDO
IPC: F42C7/06
Filed: 1964-08-20
Abstract: 1,039,018. Non-magnetic land mines. BRIND. Aug. 20, 1964, No. 34127/64. Heading F3A. A non-magnetic mine has a moulded plastics casing, there being an elastic cap and a flange which form an air chamber from which air flows to inflate a bag when a load is applied to the cap so as to release a striker which then moves under the action the air compressed in the chamber to strike a primer. The cap E (Fig. 1, not shown) and flange D are airtightly fixed to the casing A by a threaded ring B while the bag G is located with its mouth in a hole d 2  in the flange and closed by a stopper I with a calibrated hole l 2 . The bag G is held flat between two jaws (not shown) pivoted on the flange, each jaw having a lug which locks the striker L. When a load is applied to deform the cap E, air flows through the hole i 2  to inflate the bag G which separates the pivoted jaws to free the striker, the latter, being subjected to the air compressed beneath the lid E by way of a membrane F covering a hole d 1  in the flange D, strikes a primer U to initiate a detonator T and a charge S. A safety device to prevent operation during laying or temperature changes comprises a spring-loaded shaft x 2  with a head X imperfectly seating against a hole d 5  in the flange D, the parts being held in a sleeve V connected to the hole d 5  at one end and open to the atmosphere via holes v 2  at the other end; during laying the valve head is held clear of the hole d 5  by means of a pin in a hole x 3  in the stem, while on removal of the pin the imperfect seal subsequently made allows air to escape to atmosphere without operating the mine during any gradual pressure increases due to temperature effects.
Patent GB-340093-A (GB)
Title: A convertible bed, reclining chair and deck chair
IPC: A47C4/30
Filed: 1929-11-08
Abstract: 340,093. Convertible bedsteads. SMITH, A. H., Redcroft, The Beach, Lancing, Sussex. Nov. 8,1929, No. 34162. [Classes 52 (ii) and 52 (iv).] A convertible bed, reclining-chair and deck-chair comprises a head-rail a shown in Figs. 1 and 3 and a footrail b carrying a canvas strip c, the ends of which are joined on the underside by springs d. Strut-members e, f, are hinged by a member g through holes provided in the struts at points corresponding to the duty as a bed, chair &c. required. Legs k are held in notches y by spring catches when the device is used as a bed and a hinged support h, h<1> rests in one of the pairs of notches j when used as a reclining-chair or deck-chair.
Patent GB-411760-A (GB)
Title: Improvements in or relating to implements for driving staples, tacks or like fasteners
IPC: B25D1/00
Filed: 1932-12-14
Abstract: 411,760. Nailing and stapling hand tools. BOSTON WIRE STITCHER CO., Division Street, East Greenwich, Rhode Island, U.S.A. Dec. 14, 1932, No. 34228/33. Convention date, June 8, 1932. Divided on 411,545. Drawings to Specification. [Class 89 (iii).] The implement for driving staples or tacks is identical with that described in Specification 411,545. The means for preventing feeding of the fasteners when the gate 78 is opened is claimed.
Patent GB-391251-A (GB)
Title: Improvements in or relating to fastening devices
IPC: A44C11/02
Filed: 1931-12-12
Abstract: 391,251. Stud fastenings ; spring hinges. JONES, J. L., 1, Victoria Street, Liverpool. Dec. 12, 1931, Nos. 34470/31 and 3788/32. [Classes 44 and 65 (ii).] A fastening for bags, gloves, straps, &c. consists of two plates 15, 16 having circular holes 24, 25 which are eccentric to one another so that a stud 11 can pass through the holes only when the plates are moved apart. The plates are hingedly connected together by a pin 18 passing through lugs 9, 19 and carrying a spring 23 to press the plates together. To engage the fastening, the stud is passed through the hole 24 in the lower plate 15 and lifts the upper plate 16 ; slight lateral movement of the stud towards the hinge aligns it with the hole 25 and the plate 16 returns behind the head of the stud into contact with the plate 15. To release the fastening, the plate 16 is lifted away from the plate 15. The plate 15 may be mounted on one edge 17 of a bag by a plate 20 and a hollow rivet 21. In a modification, Fig. 6, the stud 33 is slidably mounted on a strap 30 and is positioned by a shank 35 engaging one of a number of holes 36. To mount the plate 37 on the strap, the strap is passed through one or both of the slots 38, 39. The upper plate 41 may carry an auxiliary plate 42 which lies in the space formed by flanges on the plate 37, and prevents strain on the hinge-pin when the strap is pulled. The plates may be slightly curved. In the case of thick plates, the holes may be cut obliquely to the surfaces of the plates. - According to the second Provisional Specification, the hole in the upper plate may be nearer to the free edge of the plate than that in the lower plate.
Patent GB-823337-A (GB)
Title: Preparation of alkylamine sulphate solutions
Filed: 1957-11-05
Abstract: Calcium magnesium, manganese or iron carbonates are prepared by reacting a sulphate of the metal concerned with an alkylamine in the presence of carbon dioxide.  The alkylamine sulphate solutions so produced may be employed in the process of Specification 816,611 for producing potassium sulphate by reacting the amine sulphate with potassium chloride.  The amine may first be carbonated and then added to a water solution or suspension of the metal salts or the solid metal salt may be added to a solution of the amine carbonate. Reaction temperatures are normally between 70 DEG  and 100 DEG  C. The sulphates employed may be natural substances such as kieserite or gypsum, or a calcium sulphate derived from the production of phosphoric acid by reacting raw phosphate with sulphuric acid. Magnesium carbonate trihydrate may be prepared at reaction temperatures below 50 DEG  C. and basic magnesium carbonate is formed at higher reaction temperatures. Examples relate to the production of magnesium and calcium carbonates from kieserite and gypsum respectively.  Amines referred to are isopropylamine, butylamine, triethylamine and monomethylamine.ALSO:A solution of an alkylamine sulphate is produced by reacting in aqueous medium the sulphate of a metal having an insoluble hydroxide and/or carbonate, e.g. Ca, Mg, Mn, Fe, with an alkylamine, in presence or not of CO2, and separating the precipitated metal compound.  Concentrated solutions suitable for reacting with potassium chloride to produce potassium sulphate by the process of Specification 816,611, [Group III], may be obtained.  A 10% excess of amine over the stoichiometric amount is preferable. Gypsum reacts at ordinary temperature, kieserite at, e.g. 70 DEG  or 100 DEG  C., and anhydrite at 80 DEG  C.  The amine may be primary, secondary or tertiary and preferably boils below 100 DEG  C., in particular having 1-4 carbon atoms in the alkyl radical. Natural metal salts, and residual compounds from such processes as manufacture of phosphoric acid from crude phosphates may be used. Examples relate to isopropylamine, butylamine, di- and triethylamine and methylamine sulphates.
Patent GB-1454321-A (GB)
Title: Apparatus for purifying sewage or effluent
IPC: C02F3/08
Filed: 1974-08-06
Abstract: 1454321 Apparatus for treating sewage V STENGELIN 6 Aug 1974 [10 Aug 1973] 34486/ 74 Heading BIC Apparatus for treating effluent or sewage comprises a plate assembly 1 rotatably mounted so that the plates are immersed in the flowing liquid in a trough, the plates being of foamed plastics material and incorporating reinforcing elements e.g. collars 19 in spacer bosses 15 and strengthening discs 23 in the hub regions, the density of the whole assembly being selected so that in use, with biological fur on the plates, the assembly is buoyant in the liquid.
Patent GB-1483697-A (GB)
Title: Dental cement composition
IPC: A61K6/083
Filed: 1975-08-20
Abstract: 1483697 Dental cement compositions SHOFU DENTAL MFG CO Ltd 20 Aug 1975 34640/75 Heading C3P  Dental cements are formed from one or more metal oxides and/or silicon oxide and a resin which is a copolymer of 3-butene-1,2,3-tricarboxylic acid and an α,#-olefinically unsaturated monocarboxylic acid, especially acrylic or methacrylic acid. Other monomers may be included in the copolymer. In examples, the metal oxide is a mixture of oxides of Zn/Mg or of Al/Zn/Mg/Bi.
Patent GB-980572-A (GB)
Title: Improvements relating to cooled blades, e.g. for a gas turbine engine
Inventor: MALLEY HARRY HARTLEY
IPC: F01D5/18
Filed: 1963-09-02
Abstract: 980,572. Gas turbine blades. ROLLSROYCE Ltd. Sept. 2, 1963, No. 34649/63. Heading FIT. A hollow aerofoil shaped gas turbine blade has an external wall, a cooling fluid passage extending internally of and immediately alongside the external wall and having at any cross section a width which is less than the thickness of the external wall at that cross section, fluid inlet means through which a cooling fluid may be supplied to the passage at a region which is adjacent to one side of the blade and is spaced from the leading edge thereof, and fluid outlet means through which the cooling fluid may be withdrawn from the passage, the passage being formed to cause the cooling fluid supplied to the region to flow therefrom and alongside the said one side to adjacent the leading edge and thereafter to flow in substantially the opposite direction from adjacent the leading edge and alongside the other side of the blade so as to pass to the fluid outlet means. A gas turbine nozzle guide blade 14 has an external wall 20 and an internal wall 21 dividing the blade into leading and trailing edge compartments 23, 24 respectively. A tube 25 extends radially through compartment 23 and is supplied at both ends with cooling air from the engine compressor. The air enters passage 30 between the tube 25 and the blade side 18 through slots 33 in the tube 25 and is deflected by a perforated baffle 32 to flow towards the leading edge 16 of the blade 14. The air then flows along passage 30 adjacent side 19, through holes 22 in the dividing wall 21 and into compartment 24 from which it leaves through holes 34 to cool the trailing edge 17. At any cross-section the width of the passage 30 is less than the thickness of the wall 20.
Patent GB-310384-A (GB)
Title: Improvements in or relating to apparatus for use in the manufacture of artificial silk or other operations in which liquids are supplied under pressure
IPC: D01D1/09
Filed: 1927-12-21
Abstract: 310,384. British Celanese, Ltd., and Kinsella, E. Dec. 21, 1927. Governing and regulating.-Pumping apparatus for supplying regulated quantities of artificial silk spinning solution or other liquid to a spinning jet or jets or other point or points of use, comprises one or more units each consisting of a pump, a static measuring-device of the orifice. capillary tube or similar type, and a pressure balance valve, the latter being exposed on opposite sodes to the pressures on the inlet and delivery sides of the static measuring- device and being so constructed and arranged as to control the supply of spinning &c. solution to the pump which delivers liquid under pressure to the inlet side of the measuring-device. Means may be provided whereby the aperture of the static measuring-device may be controlled automatically so that the flow through the device remains constant under variations of temperature. In the construction shown in Fig. 1, the static measuring-device consists of a perforated plate 4 which is supplied with liquid under pressure by a pump 2 through a passage 14 and chamber 9. The valve device which serves to maintain a constant difference of pressure as between the two sides of the static measuring device 4, consists of a valve 7 carried. by a piston 6 working against a spring 22 in the chamber 9 the inner side of the piston being subjected to the delivery pressure of the pump and the upper side to the pressure in the discharge pipe 13. The valve 7 is of the piston type, being provided with an inclined groove 17 which forms a connection between the grooves 16, 18 connected to the inlet pipe and to the inlet pipe 19 of the pump 2 respectively. For use when starting, a bye.pass 26 controlled by a screw valve 25 is provided, and to permit of the escape of air the screw plug 27 is furnished with a passage 28. To compensate for temperature variation the aperture in the perforated plate 4 is controlled by means of a valve 23 carried by a bi-metal strip 24. In the construction shown in Fig. 4, the control valve of the pump consists of a double conical member 14, and it is carried by a diaphragm 6 subjected on opposite sides to the inlet and discharge pressures of the static measuring-device which in this form consists of an orifice 4 partly closed by a conical valve 24. The latter constitutes a part of the means for rendering the delivery of the unit independent of temperature variations, for which purpose it is mounted on a capsule 25 containing a volatile liquid, while an extension 30 of the valve is connected to a diaphragm 31 exposed on the one side to the pressure of the atmosphere and on the other side to the discharge pressure.
Patent GB-506377-A (GB)
Title: Improvements in passage vessels for separating pig-iron and slag
IPC: C21B3/10
Filed: 1938-11-29
Abstract: 506,377. Metal - pouring apparatus. DORTMUND - HOERDER HUTTENVEREIN AKT.-GES. Nov. 29, 1938, No. 34741. Convention date, Jan. 22. [Class 83 (i)] A vessel, adapted to receive pig iron containing slag, which may include soda, at a and discharge the iron at d and the slag at e, is lined with refractory carbon bricks f or ramming composition, i.e. ground cbke and tar. To prevent this lining from oxidation it may be coated particularly where it comes in contact with the air with a layer of refractory stone mixture q, as usually employed for refractory bricks. These two linings may be applied, as shown, to a vessel already provided with a lining l of the usual refractory brick. The vessel may have trunnions and eyes k forhandling.
Patent GB-978635-A (GB)
Title: Improvements in or relating to tray partitions
IPC: B65D25/04
Filed: 1962-09-12
Abstract: 978,635. Filing papers. H. H. ROSS. April 8, 1963 [Sept. 12, 1962], No. 34865/62. Heading B6E. [Also in Division B8] Tray partitioning elements, preferably made from a single blank of cardboard or the like and intended for use in filing trays, each comprises a base panel 10, which lies flat on the floor of a tray, and partitioning panels 11, 14, the panel 11 having slots 17, 18 whereby the panel 14 of another element may be detachably connected in face to face relation thereto. Fig. 4 shows elements 20-22 connected together to form a chain running lengthwise of a tray 15. The panels 11 may be as wide as the tray or the tray may be divided longitudinally to accommodate more than one chain. Index tabs 25 may be provided on panels 11 or panels 14 may be extended upwardly (Fig. 6, not shown). Specification 957,490 is referred to.
Patent GB-748812-A (GB)
Title: Improvements in or relating to piperazine derivatives and process of preparing the same
Filed: 1953-12-15
Abstract: The invention comprises 1-formyl piperazine and its preparation by catalytic hydrogenation of a 1 - formyl - 4 - (benzyl, benzhydryl, carbobenzoxy, or p-nitrosophenyl) piperazine or alkaline hydrolysis of the 1-formyl-4-(p-nitrosophenyl)-piperazine, to remove the 4-substituent.  Suitably, a mono-substituted piperazine having as a substituent on one of the nitrogen atoms a benzyl, benzhydryl, carbobenzoxy or p-nitrosophenyl group is treated with formic acid, formamide, chloral, or a lower alkyl formate, the alkyl group of which has 1-5 carbon atoms, and the substituent group is removed from the substituted formyl piperazine by catalytic hydrogenation or hydrolysis.  Preferably a 1-benzyl piperazine wherein the benzyl group may be substituted by any group which does not interfere with the formylation, such as a halogen or an alkyl, alkoxy, phenyl, nitro or amino group is treated with a lower alkyl formate such as methyl formate, the reaction product is debenzylated by catalytic hydrogenation.  In examples: (1) and (2) an alcoholic solution of 1-(p-methoxybenzyl)-4-formyl piperazine, made by formylating p-methoxybenzyl piperazine, is hydrogenated in the presence of palladium on charcoal to give 1-formyl piperazine; and (3) 1-benzyl-4-formyl piperazine, made by heating 1-benzyl-piperazine with methyl formate, is hydrogenated to give 1-formyl piperazine. 1-Benzyl piperazine is made by heating 1-benzyl-4-carbethoxy piperazine with potassium hydroxide in methanol. 1-Benzyl-4-carbethoxy piperazine is made by treating carbethoxy piperazine with benzaldehyde and hydrogenating the product.
Patent GB-1177410-A (GB)
Title: Improvements in Gas Turbine Engine Turbine Rotor Shrouds
IPC: F01D11/12
Filed: 1967-07-31
Abstract: 1,177,410. Turbine cooling. GENERAL ELECTRIC CO. July 31, 1967 [Nov.2, 1966], No.35000/67. Headings F1G and F1T. In a gas turbine engine the shroud 26 encircling the rotor blades 28 is provided with passageways 30, 30" opening to circumferentially extending grooves 32 or a honeycomb structure 38 on the inner surface of the shroud for the passage of pressurized cooling gas. Air from an intermediate stage of the engine compressor (12, Fig. 1 not shown), passes through a conduit 29 to the chamber 25 between the shroud 26 and the engine casing 24. The passageways 30, e.g. of 0À005 to 0À05 inches in diameter, are disposed at a small angle to the inner surface of the shroud in a direction downstream of the flow path through the engine, Fig.4 (not shown), and the circumferential grooves (32', Fig.5 not shown), may have their downstream sides inclined at this small angle. The inner surface of the shroud may be lined with an abradable material (36, Fig.6 not shown), between the circumferential grooves (32).
Patent GB-1119283-A (GB)
Title: Improvements in and relating to drier drums for papermaking machines
IPC: D21F5/02
Filed: 1965-08-16
Abstract: 1,119,283. Heated rollers. KIMBERLEYCLARK CORP. 16 Aug., 1965 [21 Aug., 1964], No. 35022/65. Heading F2U. A steam heated drier roller comprises an outer shell 13 bolted to end heads 14 and provided with grooves 48 of uniform depth over a central portion and grooves 48a-48e of decreasing depth at each end. The ribs 47 may be circular or helical. The bottoms of grooves 48a-48e and 48 lie on a circular arc 54 and a straight line 49, respectively cross-section. The end heads are braced by stays (19), Fig. 1 (not shown), which carry headers from which ejector pipes extend into the grooves, these pipes may be in every groove or in a predetermined pattern and may be set at different heights to provide the desired insulating action of the condensate. A hollow central shaft is formed of two halves bolted together at the centre with a central diaphragm to provide for the introduction of steam and withdrawal of condensate. The shaft ends form supporting journals and an extension at one end is for mounting driving means. In a prior art disclosure, Fig. 4 (not shown); the grooves 48a-48e are replaced by a frustoconical plain section.